diff --git a/src/serialize.c b/src/serialize.c
index 4f796239..498bdaa0 100644
--- a/src/serialize.c
+++ b/src/serialize.c
@@ -187,6 +187,36 @@ static bool _serialize_storeInternal(tf_task_t* task, tf_taskstub_t* to, buffer_
 			fprintf(stderr, "Unable to store number.\n");
 		}
 	}
+	else if (JS_IsException(value))
+	{
+		JSValue exception = JS_GetException(context);
+		const char* message = JS_ToCString(context, exception);
+
+		JSValue error = JS_NewObject(context);
+		JS_SetPropertyStr(context, error, "message", JS_NewString(context, message ? message : "[exception]"));
+
+		if (JS_IsError(context, exception))
+		{
+			JSValue m = JS_GetPropertyStr(context, exception, "message");
+			if (!JS_IsUndefined(m) && !JS_IsException(m))
+			{
+				const char* ms = JS_ToCString(context, m);
+				JS_FreeCString(context, ms);
+			}
+
+			JSValue stack = JS_GetPropertyStr(context, exception, "stack");
+			if (!JS_IsUndefined(stack) && !JS_IsException(stack))
+			{
+				JS_SetPropertyStr(context, error, "stack", JS_DupValue(context, stack));
+			}
+			JS_FreeValue(context, stack);
+		}
+		_serialize_writeInt32(buffer, kException);
+		_serialize_storeInternal(task, to, buffer, error, depth + 1);
+		JS_FreeCString(context, message);
+		JS_FreeValue(context, error);
+		JS_FreeValue(context, exception);
+	}
 	else if (JS_IsString(value))
 	{
 		size_t len = 0;
@@ -235,27 +265,6 @@ static bool _serialize_storeInternal(tf_task_t* task, tf_taskstub_t* to, buffer_
 		exportid_t exportId = tf_task_export_function(task, to, value);
 		_serialize_writeInt32(buffer, exportId);
 	}
-	else if (JS_IsException(value))
-	{
-		JSValue exception = JS_GetException(context);
-		JSValue error = JS_NewObject(context);
-		JSValue message = JS_GetPropertyStr(context, exception, "message");
-		if (!JS_IsException(message))
-		{
-			JS_SetPropertyStr(context, error, "message", message);
-		}
-		if (JS_IsError(context, exception))
-		{
-			JSValue stack = JS_GetPropertyStr(context, exception, "stack");
-			if (!JS_IsUndefined(stack))
-			{
-				JS_SetPropertyStr(context, error, "stack", JS_DupValue(context, stack));
-			}
-		}
-		_serialize_writeInt32(buffer, kException);
-		_serialize_storeInternal(task, to, buffer, error, depth + 1);
-		JS_FreeValue(context, error);
-	}
 	else if (JS_IsError(tf_task_get_context(task), value))
 	{
 		_serialize_writeInt32(buffer, kError);
diff --git a/src/ssb.db.c b/src/ssb.db.c
index 4836af24..4e854826 100644
--- a/src/ssb.db.c
+++ b/src/ssb.db.c
@@ -526,17 +526,19 @@ static int _tf_ssb_sqlite_authorizer(void* user_data, int action_code, const cha
 	return SQLITE_DENY;
 }
 
-void tf_ssb_db_visit_query(tf_ssb_t* ssb, const char* query, const JSValue binds, void (*callback)(JSValue row, void* user_data), void* user_data)
+JSValue tf_ssb_db_visit_query(tf_ssb_t* ssb, const char* query, const JSValue binds, void (*callback)(JSValue row, void* user_data), void* user_data)
 {
+	JSValue result = JS_UNDEFINED;
 	sqlite3* db = tf_ssb_get_db(ssb);
+	JSContext* context = tf_ssb_get_context(ssb);
 	sqlite3_stmt* statement;
 	sqlite3_set_authorizer(db, _tf_ssb_sqlite_authorizer, ssb);
 	if (sqlite3_prepare(db, query, -1, &statement, NULL) == SQLITE_OK)
 	{
-		JSContext* context = tf_ssb_get_context(ssb);
 		if (_tf_ssb_sqlite_bind_json(context, db, statement, binds))
 		{
-			while (sqlite3_step(statement) == SQLITE_ROW)
+			int r = SQLITE_OK;
+			while ((r = sqlite3_step(statement)) == SQLITE_ROW)
 			{
 				JSValue row = _tf_ssb_sqlite_row_to_json(context, statement);
 				tf_trace_t* trace = tf_ssb_get_trace(ssb);
@@ -545,14 +547,19 @@ void tf_ssb_db_visit_query(tf_ssb_t* ssb, const char* query, const JSValue binds
 				tf_trace_end(trace);
 				JS_FreeValue(context, row);
 			}
+			if (r != SQLITE_DONE)
+			{
+				result = JS_ThrowInternalError(context, "SQL Error %s: running \"%s\".", sqlite3_errmsg(db), query);
+			}
 		}
 		sqlite3_finalize(statement);
 	}
 	else
 	{
-		printf("prepare failed: %s: %s\n", sqlite3_errmsg(db), query);
+		result = JS_ThrowInternalError(context, "SQL Error %s: preparing \"%s\".", sqlite3_errmsg(db), query);
 	}
 	sqlite3_set_authorizer(db, NULL, NULL);
+	return result;
 }
 
 static JSValue _tf_ssb_format_message(JSContext* context, const char* previous, const char* author, int64_t sequence, double timestamp, const char* hash, const char* content, const char* signature, bool sequence_before_author)
diff --git a/src/ssb.db.h b/src/ssb.db.h
index 3016eea4..8a4b1571 100644
--- a/src/ssb.db.h
+++ b/src/ssb.db.h
@@ -13,7 +13,7 @@ bool tf_ssb_db_blob_store(tf_ssb_t* ssb, const uint8_t* blob, size_t size, char*
 
 bool tf_ssb_db_get_message_by_author_and_sequence(tf_ssb_t* ssb, const char* author, int64_t sequence, char* out_message_id, size_t out_message_id_size, double* out_timestamp, char** out_content);
 bool tf_ssb_db_get_latest_message_by_author(tf_ssb_t* ssb, const char* author, int64_t* out_sequence, char* out_message_id, size_t out_message_id_size);
-void tf_ssb_db_visit_query(tf_ssb_t* ssb, const char* query, const JSValue binds, void (*callback)(JSValue row, void* user_data), void* user_data);
+JSValue tf_ssb_db_visit_query(tf_ssb_t* ssb, const char* query, const JSValue binds, void (*callback)(JSValue row, void* user_data), void* user_data);
 
 typedef struct sqlite3 sqlite3;
 bool tf_ssb_db_check(sqlite3* db, const char* author);
diff --git a/src/ssb.js.c b/src/ssb.js.c
index 293760e1..0241ea3e 100644
--- a/src/ssb.js.c
+++ b/src/ssb.js.c
@@ -177,21 +177,23 @@ static void _tf_ssb_sqlStream_callback(JSValue row, void* user_data)
 
 static JSValue _tf_ssb_sqlStream(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv)
 {
+	JSValue result = JS_NULL;
 	tf_ssb_t* ssb = JS_GetOpaque(this_val, _tf_ssb_classId);
 	if (ssb)
 	{
 		const char* query = JS_ToCString(context, argv[0]);
 		if (query)
 		{
-			sqlStream_callback_t info = {
+			sqlStream_callback_t info =
+			{
 				.context = context,
 				.callback = argv[2],
 			};
-			tf_ssb_db_visit_query(ssb, query, argv[1], _tf_ssb_sqlStream_callback, &info);
+			result = tf_ssb_db_visit_query(ssb, query, argv[1], _tf_ssb_sqlStream_callback, &info);
 			JS_FreeCString(context, query);
 		}
 	}
-	return JS_NULL;
+	return result;
 }
 
 static JSValue _tf_ssb_post(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv)
diff --git a/src/task.c b/src/task.c
index e9f17751..93d3321a 100644
--- a/src/task.c
+++ b/src/task.c
@@ -1346,6 +1346,7 @@ static bool _tf_task_run_jobs(tf_task_t* task)
 		if (context)
 		{
 			tf_util_report_error(context, result);
+			JS_FreeValue(context, result);
 		}
 		if (r < 0)
 		{
diff --git a/src/util.js.c b/src/util.js.c
index c9c9a3af..43ea3d75 100644
--- a/src/util.js.c
+++ b/src/util.js.c
@@ -130,17 +130,15 @@ bool tf_util_report_error(JSContext* context, JSValue value)
 	}
 	else if (JS_IsException(value))
 	{
-		js_std_dump_error(context);
-		JSValue exception = JS_GetException(context);
-		const char* string = JS_ToCString(context, exception);
-		printf("Exception: %s\n", string);
-		JS_FreeCString(context, string);
 		tf_task_t* task = tf_task_get(context);
 		if (task)
 		{
-			tf_task_send_error_to_parent(task, exception);
+			tf_task_send_error_to_parent(task, value);
+		}
+		else
+		{
+			js_std_dump_error(context);
 		}
-		JS_FreeValue(context, exception);
 		is_error = true;
 	}
 	return is_error;